계통연계형 태양광발전 인버터를 위한 주기적인 영전류 구간을 가지는 새로운 AFD 단독운전 검출기법
Novel AFD method of islanding detection with a periodic zero current for improving on islanding detection for grid-connected photovoltaic inverters
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Abstract
This paper proposes a novel active frequency drift (AFD) method for the islanding prevention of grid-connected photovoltaic inverter. To detect the islanding phenomenon of grid-connected photovoltaic (PV) inverters concerning about the safety hazards and the damage to other electric equipments, many kinds of anti-islanding methods have been presented. Among them, AFD method using chopping fraction enables the islanding detection to drift up (or down) the frequency of the voltage during the islanding situation. In this paper, injecting the periodic zero current into the basic AFD method is proposed. This proposed method shows the analytical design value of cf to meet the test procedure of IEEE Std. 1547 with various load conditions. Detection of islanding is verified using simulation tool PSIM.
참고문헌 (9)
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- "Analysis and Performance Assessment of the Active Frequency Drift Method of Islanding Prevention", 14(3) (1999)
- "Inverters, Converters, and Controllers for Use in Independent Power Systems" (2002)
- "단독운전검출을 위한 Active Frequency Drift Positive Feedback기법의 Chopping Fraction Gain" (2004)
- "IEEE Standard Conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power Systems" (2005)
- "A Novel Active Frequency Drift Method of Islanding Prevention for the grid-connected Photovoltaic Inverter" (2005)